Materials Literature
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A new approach based on hot injection method is proposed to gram-scale Cu2ZnSnS4 nanoparticles production minimizing the use of organic solvents. Nanocrystal synthesis was performed starting from metal chlorides and pure sulphur powder and using Oleylamine as capping agent. As a result, core-shell nanoparticles with a…
Since a number of failures have happened on transformers and reactors due to the corrosive sulfur problem, especially for Dibenzyle-disulfide (DBDS) in mineral insulation oils, many researchers have carried out a series of studies on such issue. In this paper, some related mechanisms of corrosive sulfur problems in mi…
As a commonly used implant material, calcium sulfate cement (CSC), has some shortcomings, including low compressive strength, weak osteoinduction capability, and rapid degradation. In this study, silica-based mesoporous materials such as SBA-15 were synthesized and combined with CSC to prepare CSC/SBA-15 composites. T…
Polyethylene terephthalate is one of the most widely used materials in the production of containers and packaging. However, its application is limited by its low barrier properties in relation to oxygen and carbon dioxide. Methods used for the manufacture of containers with improved gas barrier properties are discusse…
The optical theorem is generalized for the case of excitation of local structures by point sources. It is shown that an essential parameter, the Purcell factor, can be represented in analytical form. The results are generalized for the case of an interface between two semi-spaces. These results are of paramount import…
Abstract The Angosto de Lampazar, a classic locality for the study of lower Paleozoic successions in the Cordillera Oriental, NW Argentina, has yielded a late Cambrian relatively diverse, lingulate brachiopod fauna. Sandy lenses with calcareous cement from the uppermost levels of the Lampazar Formation have yielded ab…
A compact two‐layer frequency‐selective surface is presented to design circular polarisers for broadband applications. By optimising the parameters of the semi‐circle metal strip element, an excellent simulated bandwidth of axial ratio (AR) (lower than 3 dB) is achieved from 10.02 to 11.09 GHz, while the amplitude of…
The results of experimental observations at room temperature of anomalous Hall effect associated with existence of a spontaneous spin polarization of conduction electrons in mercury selenide crystals doped with chromium and vanadium in the concentration range from 1·1018 to 1·1019 sm-3 are reported. Comparison of the…
SEEs in SiT8003 MEMS-oscillator were investigated. Irradiation was provided with ion-cyclotron and picosecond focused laser. SEL, SEU were observed. Threshold LET, saturation cross-section were estimated. High SEE sensitivity of SiT8003 is shown.
AIMS: Endothelial progenitor cells (EPCs) are markers of vascular repair. Increased numbers of circulating endothelial cells (ECs) are associated with endothelial damage. MATERIALS & METHODS: We enumerated EPC-EC by using Enrichment kit with addition of anti-human CD146-PE/Cy7 from peripheral blood mononuclear cell (P…
Some Kondo insulators are expected to possess topologically protected surface states with linear Dirac spectrum: the topological Kondo insulators. Because the bulk states of these systems typically have heavy effective electron masses, the surface states may exhibit extraordinarily small Fermi velocities that could fo…
The CD20-directed monoclonal antibody rituximab (RTX) established a new era in the treatment of non-Hodgkin lymphoma (NHL); however, suboptimal response and/or resistance to RTX still limit its clinical merits. Although four effector mechanisms are validated to participate in CD20-based immunotherapy, including comple…
Ionic electromechanically active polymers (IEAPs) are considered attractive candidates for soft, miniature, and lightweight actuators. The bucky-gel actuator is a carbonaceous subtype of IEAP that due to its structure (i.e. two highly porous electrodes sandwiching a thin ion-permeable electrolyte layer) and compositio…
The paper presents magnetic parameters of LaFexCoySi1.1 bulk specimens proving strong magnetocaloric eect. The main research work was oriented on measurements of the alloy's power losses according to IEC 60404 standards and validated with unbalanced bridge method and other methods. The measurements of the LaFe10.8Co1.…
Dendritic hindered phenols were synthesised using 3-(3,5-di-tert-butyl-4-hydroxy-phenyl)-propionic acid and dendritic poly(amido-amine) (PAMAM) as materials. The structures of the dendritic hindered phenols were characterised by infrared spectroscopy (FTIR), 1H-nuclear magnetic resonance spectroscopy (1H NMR) and liqu…
We study the effects of vertical sinusoidal vibrations on a liquid droplet with a low surface tension (ethanol) deposited on a solid substrate. In a precise range of amplitudes and frequencies, the drop exhibits a dramatic worm-like shape instability with a strong symmetry breaking, comparable to the one observed by P…
Two-dimensional (2D) Shubnikov–de Haas oscillations and 2D Hall oscillations are observed in 3D copper-doped Bi2Se3 single crystals in magnetic fields up to 19.5 T at temperatures down to 0.3 K. Three samples with a high bulk carrier concentration (n ≈ 1019–1020 cm–3) are studied. The rotation of the samples in a magn…
State of the art in combustion control consists of discrete and clearly separated multiple injection events. Future available injector types establish highly flexible injection, allowing for continuously variable injection timings and therewith shaping of the fuel injection rate. This leads to a more direct influence…
Electrochemical impedance spectrum has been used in this work to study the critical chloride concentration for the rebar corrosion in fly ash concrete. The analysis and criteria for the critical corrosion point of rebar have been interpreted, and the surface morphology of the corroded rebar has been studied using SEM.…
The problem of the estimation of the reliability of a metal-composite overwrapped pressure vessel for the electrojet engine unit of a satellite vehicle is considered. The functions of probabilities of failure-free performance according to impermeability and strength criteria are used as reliability characteristics. Th…